Rose plant named ‘Kolmag’

ABSTRACT

A new and distinct cultivar of Rose plant named ‘Kolmag’, characterized by its upright and outwardly spreading plant habit; dark green leaflets; single purple-colored flowers; red-colored fruits; and good postproduction longevity.

BOTANICAL CLASSIFICATION/CULTIVAR DESIGNATION

Rosa hybrida cultivar Kolmag.

BACKGROUND OF THE INVENTION

The present Invention relates to a new and distinct cultivar of Roseplant, botanically known as Rosa hybrida, commercially used as cut stemswith fruits or hips, and hereinafter referred to by the name ‘Kolmag’.

The new Rose is a product of a planned breeding program conducted by theInventor in Boskoop, The Netherlands. The objective of the breedingprogram was to develop cut Rose varieties with attractive fruitcoloration.

The new cultivar originated from a cross made by the Inventor in 1995 oftwo unidentified proprietary seedling selections, not patented. Thecultivar Kolmag was discovered and selected by the Inventor in 1997 as aflowering plant within the progeny of the stated cross in a controlledenvironment in Boskoop, The Netherlands.

Asexual reproduction of the new Rose by terminal cuttings taken atBoskoop, The Netherlands, has shown that the unique features of this newRose are stable and reproduced true to type in successive generations ofasexual reproduction.

SUMMARY OF THE INVENTION

The following traits have been repeatedly observed and are determined tobe the unique characteristics of ‘Kolmag’. These characteristics incombination distinguish ‘Kolmag’ as a new and distinct cultivar:

1. Upright and outwardly spreading plant habit.

2. Dark green leaflets.

3. Single purple-colored flowers.

4. Red-colored fruits.

5. Good postproduction longevity.

Plants of the new Rose differ from plants of the parent seedlingselections primarily in flower and fruit coloration.

Plants of the new Rose can be compared to plants of the Rose cultivarSensational Fantasy, not patented. In side-by-side comparisons conductedin Boskoop, The Netherlands, plants of the new Rose differed from plantsof the cultivar Sensational Fantasy in the following characteristics:

1. Plants of the new Rose had more thorns than plants of the cultivarSensational Fantasy.

2. Fruits of plants of the new Rose were more intense red in color thanfruits of plants of the cultivar Sensational Fantasy.

3. Plants of the new Rose had larger fruits than plants of the cultivarSensational Fantasy.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying colored photographs illustrate the overall appearanceof the new Rose, showing the colors as true as it is reasonably possibleto obtain in colored reproductions of this type. Colors in thephotographs may differ slightly from the color values cited in thedetailed botanical description which accurately describe the colors ofthe new Rose.

The photograph on the first sheet comprises a side perspective view of atypical plant of ‘Kolmag’ with developed fruits.

The photographs on the second sheet (top to bottom) are close-up viewsof a typical upper surface of fully expanded leaves of ‘Kolmag’, atypical opened flower of ‘Kolmag’ and a typical fruit of ‘Kolmag’.

DETAILED BOTANICAL DESCRIPTION

The new Rose has not been observed under all possible environmentalconditions. The phenotype may vary somewhat with variations inenvironment such as temperature, daylength and light intensity, without,however, any variance in genotype.

The aforementioned photographs, following observations and measurementsdescribe plants grown in Boskoop, The Netherlands, in an outdoor nurseryand under commercial production practices. Plants were about three yearsold. The photographs and description were taken during the summer whenoutdoor day temperatures ranged from 14 to 27° C. and night temperaturesranged from 7 to 12° C. In the following description, color referencesare made to The Royal Horticultural Society Colour Chart, 2001 Edition,except where general terms of ordinary dictionary significance are used.

Botanical classification: Rosa hybrida cultivar Kolmag.

Parentage:

Female parent.—Unidentified proprietary selection of Rosa hybrida, notpatented.

Male parent.—Unidentified proprietary selection of Rosa hybrida, notpatented.

Propagation:

Type.—Terminal cuttings.

Time to initiate roots.—About 35 days at 20° C.

Time to produce a rooted young plant.—About 90 days at 20° C.

Root description.—Freely branching; medium thickness; brown in color.

Plant description:

Plant form.—Upright and outwardly spreading perennial shrub; globular.

Growth habit.—Vigorous. Freely branching; dense and bushy growth habit.

Growth rate.—During the spring in Boskoop, The Netherlands, plants growabout 20 cm per month.

Plant height.—About 1.7 m.

Plant width (spread).—About 1.5 m.

Lateral branches.—Quantity per plant: About 18. Length: About 90 cm.Diameter: About 4 mm. Internode length: About 2 cm. Strength: Strong.Texture: Glabrous. Color: 143B. Thorns: Density: Moderate. Shape:Triangular with sharp acuminate apices. Height: About 6 mm. Diameter, atbase: About 7 mm. Color: N170D.

Foliage description.—Leaves alternate; compound with five to nineleaflets. Quantity per lateral branch: About 30. Leaf length: About 10cm. Leaf width: About 6 cm. Leaflet length: About 4 cm. Leaflet width:About 1.8 cm. Leaflet shape: Elliptic to narrowly ovate. Leaflet apex:Acute. Leaflet base: Rounded to attenuate. Leaflet margin: Serrate.Leaflet texture, upper and lower surfaces: Glabrous; smooth. Leafletvenation pattern: Pinnate. Leaflet color: Developing leaflets, uppersurface: 141A. Developing leaflets, lower surface: 143A. Fully expandedleaflets, upper surface: 139A. Fully expanded leaflets, lower surface:137C. Venation, upper surface: 139A. Venation, lower surface: 143C. Leafpetiole: Length: About 1.6 cm. Diameter: About 1 mm. Texture, upper andlower surfaces: Smooth, glabrous. Leaf rachis texture: Smooth. Color,upper and lower surfaces: 143C. Stipules: Quantity per leaf: Two.Arrangement: One stipule on either side of the leaf petiole. Shape:Lanceolate. Length: About 1.6 cm. Diameter: Less than 1 cm. Color: Uppersurface: 141A. Lower surface: 143A.

Flower description:

Flower type and habit.—Purple single flowers arranged in compoundcorymbs with about 25 flowers and flower buds per corymb. Flowers flatand rotate. Flowers not persistent. Flowers face mostly upright oroutward.

Natural flowering season.—Summer, typically July and August in Boskoop,The Netherlands; flowering period lasts about nine weeks; floweringcontinuous during this period.

Postproduction longevity.—Cut stems are typically harvested when allflowers have developed fruits. Flowers typically last a few days.Postproduction longevity of cut stems with fruits is more than twoweeks.

Fragrance.—Faint, typical of Rosa, sweet.

Inflorescence height.—About 9 cm.

Inflorescence diameter.—About 16 cm.

Flower buds.—Height: About 2.7 mm. Diameter: About 0.9 mm. Shape:Narrowly ovoid. Color: 143A.

Flowers.—Diameter: About 6 cm. Depth: About 1.5 cm.

Petals.—Quantity per flower: Five. Length: About 2.6 cm. Width: About3.1 cm. Shape: Obcordate. Aspect: Reflexed. Apex: Retuse. Base:Attenuate. Margin: Entire. Texture, upper and lower surfaces: Smooth.Color: Developing and fully expanded petals, upper surface: 73A; colorfading to N74C with subsequent development. Developing and fullyexpanded petals, lower surface: 75B.

Sepals.—Quantity per flower: Five. Length: About 2.4 cm. Width: About 6mm. Shape: Narrowly lanceolate. Aspect: Flat to slightly recurved. Apex:Acute. Base: Broadly cuneate. Margin: Entire. Texture: Upper surface:Smooth. Lower surface: Covered with numerous stalked glands. Glands,about 1 mm in length and dark brown in color. Stalks, pale reddish greenin color. Color: Developing sepals, upper surface: 138D. Developingsepals, lower surface: 143A. Fully expanded sepals, upper surface: 138D.Fully expanded sepals, lower surface: 143B.

Peduncles.—Length: About 3.5 cm. Diameter: About 3 mm. Orientation:About 20 to 35° from vertical. Strength: Strong. Color: 143B.

Pedicels.—Length: About 2.5 cm. Diameter: About 2 mm. Orientation: Erectto about 50° from vertical. Strength: Strong. Color: 143B.

Reproductive organs.—Stamens: Quantity per flower: About 100. Anthershape: Reniform, irregular. Anther length: About 1 mm. Anther color: 21Bto 21C. Pollen amount: Abundant. Pollen color: 4C. Pistils: Quantity perflower: About 30. Pistil length: About 0.5 mm. Stigma shape: Oval,flattened. Stigma color: 157A. Style length: Less than 0.5 mm; minute.Ovary color: 143A to 143B.

Fruits.—Quantity per flower: One. Days to ripening: About 40. Type:Fleshy hip. Shape: Roughly spherical. Length: About 1.9 cm. Diameter:About 2 cm. Texture: Sparse stiff short hairs; about 1.5 mm in length;close to N199A in color. Color: N30A to N30B, overlain with 46A; glossy.

Seeds.—Quantity per fruit: About 50. Length: About 4.5 mm. Diameter:About 2 mm. Color: 162A to 164C.

Disease susceptibility: Plants of the new Rose have been observed to notbe susceptible to pathogens common to Rose, such as mildew and BlackSpot.

Temperature tolerance: Plants of the new Rose have been observed totolerate temperatures ranging from −30 to 35° C.

It is claimed:
 1. A new and distinct cultivar of Rose plant named‘Kolmag’, as illustrated and described.